Spanner Sizes

Find yourself asking, "what spanner size do I need for an M6 thread?", then look no further! Below you will find a variety of thread sizes (metric) and the ideal spanner to tighten it. If you can't find the thread size you're looking for then let our Technical Team know through our Contact Us form.

Spanner sizes refer to the specific dimensions of spanners, which are hand tools used for tightening or loosening nuts and bolts. In Great Britain, spanners are usually measured in metric units (millimeters) or, in some cases, in imperial units (inches). The size of a spanner corresponds to the head size of the nut or bolt it fits. For instance, a 10mm spanner fits a nut with a head 10mm across. Spanners come in various types, such as open-end, ring, combination, and adjustable, each designed for specific tasks. The proper selection and use of a spanner size ensure a secure fit, preventing damage to the nut or bolt and ensuring safety during use.